Bifurcation Analyses of Steel and Concrete with Rate-Dependent Properties. Part Two: Bifurcation Analyses and Demonstration

Authors: Shen L.; Liu Y.; Chen Z.

Source: Advances in Structural Engineering, Volume 4, Number 4, 1 October 2001 , pp. 225-232(8)

Publisher: Multi-Science Publishing Co Ltd

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Abstract:

Based on the continuum tangent stiffness tensors derived in part one for steel and concrete, bifurcation analyses of rate-dependent elasto-plasticity and elastodamage are performed in (-( and (-( spaces of Mohr, respectively. Localization ellipse osculating Mohr's circle enables us to determine the critical state and failure angle. It is shown that strain rate has no effect on the failure angle, and that the parameters in rate-dependent damage model are restricted by the results of bifurcation analysis.

Keywords: BIFURCATION; DAMAGE; LOCALIZATION; PLASTICITY; RATE-DEPENDENCY

Document Type: Research article

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